Add Yahoo as a preferred source to see more of our stories on Google. The author always wrote thank-you notes as a child, and is making her kids (not pictured) do the same.Peter Dazeley/Getty Images I ...

You're currently following this author! Want to unfollow? Unsubscribe via the link in your email. My 10-year-old son happily waved goodbye to his friends as they left his birthday party. Once they ...